ML20138L370
| ML20138L370 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 02/17/1997 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20138L367 | List: |
| References | |
| NUDOCS 9702240080 | |
| Download: ML20138L370 (5) | |
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ELECTRICAL POWER SYSTEMS A.C. Sourc s - Optrating 3/4.9.A l
l 3.9 - LIMITING CONDITIONS FOR OPERATION -
4.9 - SURVEILLANCE REQUIREM5NTS i
g.
Verifymg'that all automatic diesci generator trips, except engine overspeed and generator differential i
current are automatically bypassed t
upon an emergency actuation signal.
h.
Verifying the diesel generator operates for a:24 hours. During l
the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the j
diesel generator shall be_ljed to o
J730 ad.l frg between{2626 ar(d A7NpJkW'* and j
l during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of l
this test, the diesel generator shall i
be loaded to between 2470 and 2600 kW'*. The generator voltage and frequency shall be 4160 *420 volts and 60
- 1.2 Hz, j
respectively,in s;10 seconds after i
the start signal; the steady state i
generator voltage and frequency i
shall be maintained within these limits during this test. Within 5 minutes after completing this
{
24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test, perform Surveillance Requirement 4.9.A.2.c,
m i.
Verifying that the auto-connected i;
loads to each diesel generator do not exceed the 2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> rating of 2860 kW.
l d
Momentary transients outside of the load range do not invalidate this test. Diesel generator loadings may include gradual loading as recommended by the manufacturer / vendor. This surveillance shall be conducted on only one diesel generator at a time.
f If Surveillance Requirement 4.g.A.2.c is not satisfactorily completed. It is not necessary to repeat the preceding 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test. Instead, the diesel generator may be operated at approximately full load for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or until the operating temperature has stabilized.
QUAD CITIES - UNITS 1 & 2 3/4.9-7 Amendment Nos.
9702240080 970217 PDR ADOCK 05000254-p PD9
ELECTRICAL POWER SYSTEMS -
A.C. Sources - Operating 3/4.9.A 3.9 - LIMITING CONDITIONS FOR OPERATION 4.9 - SURVEILLANCE REQUIREMENTS g.
Verifying that all automatic diesel generator trips, except engine overspeed and generator differential current are automatically bypassed upon an emergency actuation signal.
h.
Verifying the diesel generator operates for 2 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the i
diesel generator shall be loaded to between 2730 and 2860 kW" and during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test, the diesel generator shall be loaded to between 2470 and 2600 kW". The generator voltage and frequency shall be 41601420 volts and 60 i1.2 Hz, respectively, in $10 seconds after the start signal; the steady state generator voltage and frequency shall be maintained within these limits during this test. Within 5 minutes after completing this 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test, perform Surveillance Requirement 4.9.A.2.c ".
t l.
Verifying that the auto-connected loads to each diesel generator do not exceed the 2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> rating of 2860 kW.
t.
d Momentary transients outside of the load range do not invalidate this test. Diesel generator loadings may include gradualloading as recommended by the manufacturer / vendor. This surveillance shall be conducted on only one diesel generator at a time, f
If Surveillance Requirement 4.9.A.2.c is not satisfactorily completed, it is not necessary to repeat the
. preceding 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test. Instead, the diesel generator may be operated at approximately full load for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or untl* the nperating temperature has stabilized.
-QUAD CITIES - UNITS 1 & 2 3/4.9-7 Amendment Nos.
i ATTACilMENT C SIGNIFICANT IIAZARDS CONSIDERATION The Commission has provided standards for determining whether a no significant hazards consideration exists as stated in 10CFR50.92(c). A proposed amendment to an operating license involves a no significant hazards consideration if operation of the facility in accordance with the proposed amendment would not: (1) involve a significant increase in the probability or consequences of an accident previously evaluated; or (2) create the possibility of a new or different kind of accident from any accident previously evaluated; or (3) involve a significant reduction in a margin of safety.
Comed proposes to amend Appendix A, Technical Specifications 3/4.9.A,"A.C. Sources -
Operating," of Facility Operating Licenses DPR-29 and DPR-30. The purpose of this amendment request is to correct an error in Surveillance Requirement 4.9.A.8.h.
Comed has evaluated the proposed Technical Specification Amendment and determined that it does not represent a significant hazards consideration. Based on the criteria for defining a significant hazards consideration established in 10 CFR 50.92, operation of Quad Cities Units 1 and 2 in accordance with the proposed amendment will not:
1)
Involve a significant increase in the probability or consequences of an accident previously evaluated because of the following:
The proposed changes represent a correction to the emergency diesel generator surveillance requirement. The proposed changes are administrative in nature and do not significantly increase the probability or consequences of any previously evaluated accidents for Quad Cities Station. The proposed amendment is consistent with the current safety analyses and represents sufficient requirements for the assurance and reliability of equipment assumed to operate in the safety analysis.
As such, these changes will not significantly increase the probability or consequences of a previously evaluated accident.
The associated systems related to this proposed amendment are not assumed in any safety analysis to initiate any accident sequence for Quad Cities Station; therefore, the probability of any accident previously evaluated is not increased by the proposed amendment.
ATTACIIMENT C j
SIGNIFICANT IIAZARDS CONSIDERATION 2)
Create the possibility of a new or different kind of accident from any accident previously evaluated because:
l The proposed amendment for Quad Cities Station's Technical Specification is required to ensure the diesel generator is tested in accordance with the design basis requirements. The proposed changes do not create the possibility of a new or different kind of accident previously evaluated for Quad Cities Station. No new modes of operation are introduced by the proposed changes. The proposed changes are administrative in nature and maintain at least the present level of operability.
Therefore, the proposed changes do not create the possibility of a new or different kind of accident from any previously evaluated.
The associated systems related to this proposed amendment are not assumed in any safety analysis to initiate any accident sequence for Quad Cities Station; therefore, the proposed changes do not create the possibility of a new or different kind of accident from any previously evaluated.
3)
Involve a significant reduction in the margin of safety because:
The proposed amendment is required to ensure the dicsci generator is tested in accordance with the i
design basis requirements. The proposed changes are administrative in nature and do not adversely affect existing plant safety margins or the re'iability of the equipment assumed to operate in the safety analysis. The proposed changes have been evaluated and found to be acceptable for use at Quad Cities based on system design, safety analysis requirements and operational performance.
Since the proposed changes are administrative in nature and maintain necessary levels of system or component reliability, the proposed changes do not involve a significant reduction in the margin of safety.
The proposed amendment for Quad Cities Station will not reduce the availability of systems required to mitigate accident conditions; therefore, the proposed changes do not involve a significant reduction in the margin of safety.
Guidance has been provided in " Final Procedures and Standards on No Significant Hazards Considerations," Final Rule,51 FR 7744, for the application of standards to license change requests for determination of the existence of significant hazards considerations. This document provides examples of amendments which are and are not considered likely to involve significant hazards considerations. This proposed amendment does not involve a significant relaxation of the criteria used to establish safety limits, a significant relaxation of 2
the bases for the limiting safety system settings or a significant relaxation of the bases for the limiting conditions for operations. Therefore, based on the guidance provided in the Federal Register and the criteria established in 10 CFR 50.92(c), the proposed change does not constitute a significant hazards consideration.
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1 ATTACIIMENT C SIGNIFICANT HAZARDS CONSIDERATION ENVIRONMENTAL ASSESSMENT Comed has evaluated the proposed amendment against the criteria for identification oflicensing and regulatory actions requiring environmental assessment in accordance with 10 CFR 51.21. It has been determined that the proposed changes meet the criteria for a categorical exclusion as provided under 10 CFR 51.22 (c)(9). This conclusion has been determined because the changes requested do not pose significant hazards consideration or do not involve a significant increase in the amounts, and no significant changes in the types, of any effluents that may be released off-site.
- Additionally, this request does not involve a significant increase in individual or cumulative occupational radiation exposure.
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